EKH
Elastomer Coupling with split clamping hub

4 - 25,000 Nm

EKH ELASTOMER COUPLING WITH SPLIT CLAMPING HUB

Specifications EKH

EKH series 10 20 60 150 300 450 800
Type (Elastomer insert)
AB C 
ABC
ABC
ABC
ABC
ABC
ABC
Rated torque (Nm)TKN
12.6164
17216
607520
16020042
32540584
53066095
9501,100240
Max. torque* (Nm)TKmax
25326
344212
12015035
32040085
650810170
1,0601,350190
1,9002,150400
Overall length (mm)A53 66 78 90 114 126 162
Length of center section (mm)AE20 28.8 34 38 50 52 65
Outside diameter (mm)B32 42 56 66.5 82 102 136.5
Outside diameter with screw head (mm) BS32 44.5 57 68 85 105 139
Mounting length (mm)C20 25 30 35 45 50 65
Inside diameter range H7 (mm)D1/26-16 8-25 12-32 19-36 20-45 28-60 35-80
Inside diameter range H7 (inch)D1/20,250"-
0,625"
0,375"-
0,875"
0,500"-
1,250"
0,750"-
1,375"
0,875"-
1,750"
1,125"-
2,250"
1,500"-
3,125"
Inside diameter of elastomer (mm)DE14.2 19.2 26.2 29.2 36.2 46.2 60.5
Clamping screw (ISO 4762)E4xM4 4xM5 4xM6 4xM8 4xM10 4xM12 4xM16
Tightening torque of the clamping screw (Nm)E4 8 15 35 70 120 290
Distance between centers (mm)F10.5 15.5 21 24 29 38 50.5
Distance (mm)G/G17.5 8.5 10 12 15 17.5 23
Hub length (mm)H/H131 39 46 52.5 66 73 93.5
Moment of inertia per Hub
(10-3 kgm2)
J1/J2
0.005 0.02 0.06 0.1 0.4 1 9.5
Approx. weight (kg) 0.08 0.15 0.35 0.6 1.1 1.7 10
Speed standard (min-1) 13,000 12,500 11,000 10,000 9,000 8,000 4,000
*Speed balanced (103min-1) 
536340
456035
313125
222618
222616
161712
13138
CAD Portal 10 20 60 150 300 450 800
2D/3D Data 

Properties

  • Design: Both clamping hubs are fully separable due to split hubs and ISO 4762 clamping screws.
  • Tolerance: Overall clearance between shaft and hub 0.01 to 0.05 mm.
  • Material:
    • clamping hub: up to series 450 high strength aluminum, series 800 and up steel

    • elastomer insert: precision molded, wear resistant, and thermally stable polymer
  • Speeds: See table below, *Please contact R+W
                  ISO 2.5 balance grade available
  • Properties of Elastomer Coupling model EKH:
    • lateral mounting possible
    • concentrically machined hubs
    • vibration damping
    • electrically isolating
    • easy mounting
    • backlash free

Overview